Henrietta Rocks is a shallow shore dive located 50 metres off Rottnest Island, Australia. The site features a combination of scattered limestone reef patches, seagrass beds, and the remnants of a small wreck resting on a sandy bottom. Depths range from 2 to 10 metres, with an average of 7 metres, making it suitable for beginners. Divers and snorkellers should be aware of mild currents and potential surf at the entry point. Water temperatures fluctuate between 19C and 23C, influenced by the Leeuwin Current. Hazards include sharp limestone, entanglement risks, and seasonal blue bottle jellyfish. Parking and toilets are available at the site.

Parker Point at Rottnest Island is a beginner-friendly reef site offering depths between 2 and 12 metres, with an average of 7 metres. The site features mild currents and visibility typically ranging from 10 to 15 metres. Suitable for both divers and snorkellers, the reef provides a relaxed environment for exploration. Water temperatures fluctuate between 19C and 23C throughout the year, influenced by the Leeuwin Current. Shore and boat access are both available, and the site is supported by on-site facilities including toilets, showers, and parking. Typical dives last approximately 60 minutes.

Salmon Bay on Rottnest Island provides a sheltered shore entry point suitable for beginners and snorkellers. The site features a diverse underwater landscape of reef and seagrass habitats, with depths ranging from 1 to 12 metres. Protected by offshore reefs, the bay typically offers calm conditions, though mild currents may be encountered further from the shore. Visibility generally fluctuates between 5 and 15 metres. Water temperatures remain between 19C and 23C, influenced by the Leeuwin Current. Toilets are available at the site for visitor convenience. Users should remain aware of potential surf conditions during entry and exit.

Jackson Rocks at Rottnest Island features a combination of reef and cave systems situated 750 metres offshore. The site offers depths between 8 and 18 metres, with an average of 13 metres. Access is by boat only, and divers should be prepared for potential surge, particularly when exiting the cave. Visibility typically ranges from 4 to 15 metres. Due to significant boat traffic in the area, maintaining good buoyancy control and staying close to the reef during ascents is essential. Species recorded around this area include seahorses, giant cuttlefish, nudibranchs, octopuses, various wrasses, western rock lobsters, and several species of butterflyfish and rays.

Mickey Mouse and Maze is a complex reef, wall, and canyon system located off Rottnest Island. The site features a series of caves and swim-throughs that create overhead environments, requiring divers to be comfortable with confined spaces. Depths range from 1m to 27m, with an average of 15m. Visibility typically spans 15m to 30m, assisting with navigation through the intricate structure. Access is by boat only, and conditions generally feature mild currents. Hazards include boat traffic, jellyfish, and sharp coral. Divers should carry a torch and line cutter to manage the overhead sections safely. Guided tours and air fills are available locally.

Porpoise Bay at Rottnest Island features a combination of sheltered reef and a cave system. This boat-accessible site ranges in depth from 8 to 20 metres, with an average of 15 metres. Visibility typically spans 15 to 30 metres. The site is suitable for beginners, though the cave represents an overhead environment requiring careful buoyancy control and guidance. Divers should remain aware of potential currents, which can be stronger than at other local sites, and watch for boat traffic upon entry. Water temperatures range from 19 to 23C, influenced by the Leeuwin Current.

Transit Wreck is a shallow wreck and reef site located off Rottnest Island, Australia. Resting in depths between 3 and 7 metres, it serves as an accessible introduction to wreck diving for beginners. Divers access the site by boat, encountering mild currents that can be unpredictable; timing dives around slack water is recommended for a more relaxed experience. Visibility typically ranges from 5 to 15 metres. Divers should exercise caution around the structure, as sharp coral and potential entanglement hazards exist. Exposure protection is advised to prevent skin abrasions from reef edges. Always remain aware of gear placement and avoid reaching into gaps or cavities within the wreck structure.

The Basin is a sheltered reef and seagrass site located at Rottnest Island, Australia. With depths ranging from 1 to 10 metres and an average of 3 metres, it is well-suited for beginner divers and snorkellers. The site is protected from most winds, maintaining mild currents and visibility between 15 and 30 metres. Water temperatures are influenced by the Leeuwin Current, remaining warmer than the mainland coast. Shore access is straightforward, supported by on-site facilities including parking, toilets, showers, and a rinse station. Divers should remain aware of potential surface chop from afternoon sea breezes and the presence of other water users in this popular area.